Static structures (e.g. – buildings) – Specified terranean relationship – Open top – embedded container – tank – or reservoir
Patent
1996-06-06
1998-11-17
Friedman, Carl D.
Static structures (e.g., buildings)
Specified terranean relationship
Open top, embedded container, tank, or reservoir
52 1, 52 19, 521691, 137120, 137122, E03B 1100
Patent
active
058361162
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a tank system comprising a tank, a rainwater intake, a run-off for contaminated water, a movable director unit having a delivery element for the directing of rainwater coming from the rainwater intake either to the run-off for contaminated water or to the tank, a sampling conduit which branches off the delivery element, and a water collecting container provided with an outlet, whose degree of filling determines the setting of the delivery element of the director unit.
Tanks for the collection of rainwater have been used for a very long time. With drinking water becoming in short supply and with increasing costs of treated water, the utilisation of rainwater and consequently the use of tanks is of increasing interest. This applies in particular to situations in which the use of rainwater which has not been treated or which has been only slightly treated is completely harmless, such as its use for washing machines, the flushing of toilets, car washes, the watering of gardens, etc. Nevertheless, it is an objective, with the use of tanks, that the water quality should be as high as possible.
A contamination of rainwater occurs as a result of contaminated collecting surfaces, such as roofs, because of airborne materials, dust, etc. With the onset of precipitation, the dust, etc. is initially washed off from the collecting surfaces and gathers, together with the rain, for example in the tank. The entrainment of solid particles cannot be completely prevented by the use of filters. Filters are generally ineffective against the passage of dissolved harmful substances and must be cleaned or exchanged from time to time.
For the rest, the use of rainwater retaining systems, such as are represented by the tanks, is advantageous for the setting up and operation of precipitation systems, because the water overflow associated with rainfall and which cannot be precipitated in the precipitation system but has to run off directly, is reduced by the use of tanks.
Since tank overflows are connected permanently with the sewerage system, and, just like the run-off water pipes, are flushed only in the case of excessive rainfall, they can lead to the reverse entry of micro-organisms or small animals.
It is also disadvantageous in the use of tanks that sediment settles on the bottom of the tanks and therefore a cleaning of the container is necessary from time to time.
From DE-U-85 22 499 there is known an apparatus for collecting rainwater with features as first mentioned above. The apparatus comprises a channel which is mounted pivotably approximately in the centre of its length, and from the centre of which there extends downwards an outlet of small cross-section. The initial, as yet unclean, rainwater is conducted through the outlet into a container for dirty water and after the flow of a predetermined amount of rainwater the channel is pivoted and the rainwater then flows into the container for usable water. It is disadvantageous with this apparatus that it requires a reversal of the direction of flow in the channel and the points in time of the changeover from the dirty water container to the usable water container, i.e. the switching points, are not clearly defined. Initially, residual dirt collects on the rainwater side, which then is flushed into the usable water container. Moreover, the apparatus is not suitable for collecting large amounts of water, because it has no clear separation of water paths. Furthermore, the apparatus is sensitive to dirt.
From DE-C-371 743 there is known an apparatus for the automatic collecting of rainwater which comprises a collecting container suspended by weights, a reservoir container guided in this with a closable base and an overflow, and also a storage container which is filled through the overflow. Initially, rain flows through the reservoir container and fills the collecting container. Thereafter, the bottom of the reservoir container is closed, which then fills with cleaner rainwater, which then flows through the overflow into the s
REFERENCES:
patent: 924834 (1909-06-01), Ross
patent: 1475120 (1923-11-01), Johnson
patent: 1562693 (1925-11-01), Dill
patent: 2644333 (1953-07-01), Duus
patent: 3750886 (1973-08-01), Salm
IKZ-Haustechnik, H.11 (1993), p. 46. Sanitar.
sbz, H5 (1992), p. 74, Sanitar, Schweitzer.
IKZ-Haustechnik, H.6 (1993), pp. 196-198, Sanitar, Waider.
Neue Deliwa-Zeitschrift, H.5 (1992), pp. 520-522, Eschborn.
Friedman Carl D.
Wilkens Kevin D.
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